apps/s_client.c

   1 /* apps/s_client.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <assert.h>
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #include <openssl/e_os2.h>
  64 #ifdef OPENSSL_NO_STDIO
  65 #define APPS_WIN16
  66 #endif
  67
  68 /* With IPv6, it looks like Digital has mixed up the proper order of
  69    recursive header file inclusion, resulting in the compiler complaining
  70    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
  71    is needed to have fileno() declared correctly...  So let's define u_int */
  72 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
  73 #define __U_INT
  74 typedef unsigned int u_int;
  75 #endif
  76
  77 #define USE_SOCKETS
  78 #include "apps.h"
  79 #include <openssl/x509.h>
  80 #include <openssl/ssl.h>
  81 #include <openssl/err.h>
  82 #include <openssl/pem.h>
  83 #include <openssl/engine.h>
  84 #include "s_apps.h"
  85
  86 #ifdef OPENSSL_SYS_WINDOWS
  87 #include <conio.h>
  88 #endif
  89
  90
  91 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
  92 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  93 #undef FIONBIO
  94 #endif
  95
  96 #undef PROG
  97 #define PROG    s_client_main
  98
  99 /*#define SSL_HOST_NAME "www.netscape.com" */
 100 /*#define SSL_HOST_NAME "193.118.187.102" */
 101 #define SSL_HOST_NAME   "localhost"
 102
 103 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 104
 105 #undef BUFSIZZ
 106 #define BUFSIZZ 1024*8
 107
 108 extern int verify_depth;
 109 extern int verify_error;
 110
 111 #ifdef FIONBIO
 112 static int c_nbio=0;
 113 #endif
 114 static int c_Pause=0;
 115 static int c_debug=0;
 116 static int c_showcerts=0;
 117
 118 static void sc_usage(void);
 119 static void print_stuff(BIO *berr,SSL *con,int full);
 120 static BIO *bio_c_out=NULL;
 121 static int c_quiet=0;
 122 static int c_ign_eof=0;
 123
 124 static void sc_usage(void)
 125         {
 126         BIO_printf(bio_err,"usage: s_client args\n");
 127         BIO_printf(bio_err,"\n");
 128         BIO_printf(bio_err," -host host     - use -connect instead\n");
 129         BIO_printf(bio_err," -port port     - use -connect instead\n");
 130         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
 131
 132         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 133         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 134         BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
 135         BIO_printf(bio_err,"                 not specified but cert file is.\n");
 136         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 137         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 138         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
 139         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
 140         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
 141         BIO_printf(bio_err," -debug        - extra output\n");
 142         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
 143         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 144 #ifdef FIONBIO
 145         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 146 #endif
 147         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 148         BIO_printf(bio_err," -quiet        - no s_client output\n");
 149         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
 150         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
 151         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
 152         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
 153         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
 154         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
 155         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
 156         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
 157         BIO_printf(bio_err,"                 command to see what is available\n");
 158         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 159         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 160
 161         }
 162
 163 int MAIN(int, char **);
 164
 165 int MAIN(int argc, char **argv)
 166         {
 167         int off=0;
 168         SSL *con=NULL,*con2=NULL;
 169         X509_STORE *store = NULL;
 170         int s,k,width,state=0;
 171         char *cbuf=NULL,*sbuf=NULL;
 172         int cbuf_len,cbuf_off;
 173         int sbuf_len,sbuf_off;
 174         fd_set readfds,writefds;
 175         short port=PORT;
 176         int full_log=1;
 177         char *host=SSL_HOST_NAME;
 178         char *cert_file=NULL,*key_file=NULL;
 179         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 180         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
 181         int crlf=0;
 182         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 183         SSL_CTX *ctx=NULL;
 184         int ret=1,in_init=1,i,nbio_test=0;
 185         int prexit = 0, vflags = 0;
 186         SSL_METHOD *meth=NULL;
 187         BIO *sbio;
 188         char *inrand=NULL;
 189         char *engine_id=NULL;
 190         ENGINE *e=NULL;
 191 #ifdef OPENSSL_SYS_WINDOWS
 192         struct timeval tv;
 193 #endif
 194
 195 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 196         meth=SSLv23_client_method();
 197 #elif !defined(OPENSSL_NO_SSL3)
 198         meth=SSLv3_client_method();
 199 #elif !defined(OPENSSL_NO_SSL2)
 200         meth=SSLv2_client_method();
 201 #endif
 202
 203         apps_startup();
 204         c_Pause=0;
 205         c_quiet=0;
 206         c_ign_eof=0;
 207         c_debug=0;
 208         c_showcerts=0;
 209
 210         if (bio_err == NULL)
 211                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 212
 213         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
 214                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
 215                 {
 216                 BIO_printf(bio_err,"out of memory\n");
 217                 goto end;
 218                 }
 219
 220         verify_depth=0;
 221         verify_error=X509_V_OK;
 222 #ifdef FIONBIO
 223         c_nbio=0;
 224 #endif
 225
 226         argc--;
 227         argv++;
 228         while (argc >= 1)
 229                 {
 230                 if      (strcmp(*argv,"-host") == 0)
 231                         {
 232                         if (--argc < 1) goto bad;
 233                         host= *(++argv);
 234                         }
 235                 else if (strcmp(*argv,"-port") == 0)
 236                         {
 237                         if (--argc < 1) goto bad;
 238                         port=atoi(*(++argv));
 239                         if (port == 0) goto bad;
 240                         }
 241                 else if (strcmp(*argv,"-connect") == 0)
 242                         {
 243                         if (--argc < 1) goto bad;
 244                         if (!extract_host_port(*(++argv),&host,NULL,&port))
 245                                 goto bad;
 246                         }
 247                 else if (strcmp(*argv,"-verify") == 0)
 248                         {
 249                         verify=SSL_VERIFY_PEER;
 250                         if (--argc < 1) goto bad;
 251                         verify_depth=atoi(*(++argv));
 252                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 253                         }
 254                 else if (strcmp(*argv,"-cert") == 0)
 255                         {
 256                         if (--argc < 1) goto bad;
 257                         cert_file= *(++argv);
 258                         }
 259                 else if (strcmp(*argv,"-crl_check") == 0)
 260                         vflags |= X509_V_FLAG_CRL_CHECK;
 261                 else if (strcmp(*argv,"-crl_check_all") == 0)
 262                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
 263                 else if (strcmp(*argv,"-prexit") == 0)
 264                         prexit=1;
 265                 else if (strcmp(*argv,"-crlf") == 0)
 266                         crlf=1;
 267                 else if (strcmp(*argv,"-quiet") == 0)
 268                         {
 269                         c_quiet=1;
 270                         c_ign_eof=1;
 271                         }
 272                 else if (strcmp(*argv,"-ign_eof") == 0)
 273                         c_ign_eof=1;
 274                 else if (strcmp(*argv,"-pause") == 0)
 275                         c_Pause=1;
 276                 else if (strcmp(*argv,"-debug") == 0)
 277                         c_debug=1;
 278                 else if (strcmp(*argv,"-showcerts") == 0)
 279                         c_showcerts=1;
 280                 else if (strcmp(*argv,"-nbio_test") == 0)
 281                         nbio_test=1;
 282                 else if (strcmp(*argv,"-state") == 0)
 283                         state=1;
 284 #ifndef OPENSSL_NO_SSL2
 285                 else if (strcmp(*argv,"-ssl2") == 0)
 286                         meth=SSLv2_client_method();
 287 #endif
 288 #ifndef OPENSSL_NO_SSL3
 289                 else if (strcmp(*argv,"-ssl3") == 0)
 290                         meth=SSLv3_client_method();
 291 #endif
 292 #ifndef OPENSSL_NO_TLS1
 293                 else if (strcmp(*argv,"-tls1") == 0)
 294                         meth=TLSv1_client_method();
 295 #endif
 296                 else if (strcmp(*argv,"-bugs") == 0)
 297                         bugs=1;
 298                 else if (strcmp(*argv,"-key") == 0)
 299                         {
 300                         if (--argc < 1) goto bad;
 301                         key_file= *(++argv);
 302                         }
 303                 else if (strcmp(*argv,"-reconnect") == 0)
 304                         {
 305                         reconnect=5;
 306                         }
 307                 else if (strcmp(*argv,"-CApath") == 0)
 308                         {
 309                         if (--argc < 1) goto bad;
 310                         CApath= *(++argv);
 311                         }
 312                 else if (strcmp(*argv,"-CAfile") == 0)
 313                         {
 314                         if (--argc < 1) goto bad;
 315                         CAfile= *(++argv);
 316                         }
 317                 else if (strcmp(*argv,"-no_tls1") == 0)
 318                         off|=SSL_OP_NO_TLSv1;
 319                 else if (strcmp(*argv,"-no_ssl3") == 0)
 320                         off|=SSL_OP_NO_SSLv3;
 321                 else if (strcmp(*argv,"-no_ssl2") == 0)
 322                         off|=SSL_OP_NO_SSLv2;
 323                 else if (strcmp(*argv,"-serverpref") == 0)
 324                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
 325                 else if (strcmp(*argv,"-cipher") == 0)
 326                         {
 327                         if (--argc < 1) goto bad;
 328                         cipher= *(++argv);
 329                         }
 330 #ifdef FIONBIO
 331                 else if (strcmp(*argv,"-nbio") == 0)
 332                         { c_nbio=1; }
 333 #endif
 334                 else if (strcmp(*argv,"-engine") == 0)
 335                         {
 336                         if (--argc < 1) goto bad;
 337                         engine_id = *(++argv);
 338                         }
 339                 else if (strcmp(*argv,"-rand") == 0)
 340                         {
 341                         if (--argc < 1) goto bad;
 342                         inrand= *(++argv);
 343                         }
 344                 else
 345                         {
 346                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 347                         badop=1;
 348                         break;
 349                         }
 350                 argc--;
 351                 argv++;
 352                 }
 353         if (badop)
 354                 {
 355 bad:
 356                 sc_usage();
 357                 goto end;
 358                 }
 359
 360         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
 361                 && !RAND_status())
 362                 {
 363                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
 364                 }
 365         if (inrand != NULL)
 366                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 367                         app_RAND_load_files(inrand));
 368
 369         if (bio_c_out == NULL)
 370                 {
 371                 if (c_quiet)
 372                         {
 373                         bio_c_out=BIO_new(BIO_s_null());
 374                         }
 375                 else
 376                         {
 377                         if (bio_c_out == NULL)
 378                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 379                         }
 380                 }
 381
 382         OpenSSL_add_ssl_algorithms();
 383         SSL_load_error_strings();
 384
 385         e = setup_engine(bio_err, engine_id, 1);
 386
 387         ctx=SSL_CTX_new(meth);
 388         if (ctx == NULL)
 389                 {
 390                 ERR_print_errors(bio_err);
 391                 goto end;
 392                 }
 393
 394         if (bugs)
 395                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
 396         else
 397                 SSL_CTX_set_options(ctx,off);
 398
 399         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 400         if (cipher != NULL)
 401                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
 402                 BIO_printf(bio_err,"error setting cipher list\n");
 403                 ERR_print_errors(bio_err);
 404                 goto end;
 405         }
 406 #if 0
 407         else
 408                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 409 #endif
 410
 411         SSL_CTX_set_verify(ctx,verify,verify_callback);
 412         if (!set_cert_stuff(ctx,cert_file,key_file))
 413                 goto end;
 414
 415         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 416                 (!SSL_CTX_set_default_verify_paths(ctx)))
 417                 {
 418                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
 419                 ERR_print_errors(bio_err);
 420                 /* goto end; */
 421                 }
 422
 423         store = SSL_CTX_get_cert_store(ctx);
 424         X509_STORE_set_flags(store, vflags);
 425
 426         con=SSL_new(ctx);
 427 #ifndef OPENSSL_NO_KRB5
 428         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
 429                 {
 430                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
 431                 }
 432 #endif  /* OPENSSL_NO_KRB5  */
 433 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
 434
 435 re_start:
 436
 437         if (init_client(&s,host,port) == 0)
 438                 {
 439                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 440                 SHUTDOWN(s);
 441                 goto end;
 442                 }
 443         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
 444
 445 #ifdef FIONBIO
 446         if (c_nbio)
 447                 {
 448                 unsigned long l=1;
 449                 BIO_printf(bio_c_out,"turning on non blocking io\n");
 450                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
 451                         {
 452                         ERR_print_errors(bio_err);
 453                         goto end;
 454                         }
 455                 }
 456 #endif
 457         if (c_Pause & 0x01) con->debug=1;
 458         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 459
 460         if (nbio_test)
 461                 {
 462                 BIO *test;
 463
 464                 test=BIO_new(BIO_f_nbio_test());
 465                 sbio=BIO_push(test,sbio);
 466                 }
 467
 468         if (c_debug)
 469                 {
 470                 con->debug=1;
 471                 BIO_set_callback(sbio,bio_dump_cb);
 472                 BIO_set_callback_arg(sbio,bio_c_out);
 473                 }
 474
 475         SSL_set_bio(con,sbio,sbio);
 476         SSL_set_connect_state(con);
 477
 478         /* ok, lets connect */
 479         width=SSL_get_fd(con)+1;
 480
 481         read_tty=1;
 482         write_tty=0;
 483         tty_on=0;
 484         read_ssl=1;
 485         write_ssl=1;
 486
 487         cbuf_len=0;
 488         cbuf_off=0;
 489         sbuf_len=0;
 490         sbuf_off=0;
 491
 492         for (;;)
 493                 {
 494                 FD_ZERO(&readfds);
 495                 FD_ZERO(&writefds);
 496
 497                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
 498                         {
 499                         in_init=1;
 500                         tty_on=0;
 501                         }
 502                 else
 503                         {
 504                         tty_on=1;
 505                         if (in_init)
 506                                 {
 507                                 in_init=0;
 508                                 print_stuff(bio_c_out,con,full_log);
 509                                 if (full_log > 0) full_log--;
 510
 511                                 if (reconnect)
 512                                         {
 513                                         reconnect--;
 514                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
 515                                         SSL_shutdown(con);
 516                                         SSL_set_connect_state(con);
 517                                         SHUTDOWN(SSL_get_fd(con));
 518                                         goto re_start;
 519                                         }
 520                                 }
 521                         }
 522
 523                 ssl_pending = read_ssl && SSL_pending(con);
 524
 525                 if (!ssl_pending)
 526                         {
 527 #ifndef OPENSSL_SYS_WINDOWS
 528                         if (tty_on)
 529                                 {
 530                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
 531                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
 532                                 }
 533                         if (read_ssl)
 534                                 FD_SET(SSL_get_fd(con),&readfds);
 535                         if (write_ssl)
 536                                 FD_SET(SSL_get_fd(con),&writefds);
 537 #else
 538                         if(!tty_on || !write_tty) {
 539                                 if (read_ssl)
 540                                         FD_SET(SSL_get_fd(con),&readfds);
 541                                 if (write_ssl)
 542                                         FD_SET(SSL_get_fd(con),&writefds);
 543                         }
 544 #endif
 545 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
 546                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 547
 548                         /* Note: under VMS with SOCKETSHR the second parameter
 549                          * is currently of type (int *) whereas under other
 550                          * systems it is (void *) if you don't have a cast it
 551                          * will choke the compiler: if you do have a cast then
 552                          * you can either go for (int *) or (void *).
 553                          */
 554 #ifdef OPENSSL_SYS_WINDOWS
 555                         /* Under Windows we make the assumption that we can
 556                          * always write to the tty: therefore if we need to
 557                          * write to the tty we just fall through. Otherwise
 558                          * we timeout the select every second and see if there
 559                          * are any keypresses. Note: this is a hack, in a proper
 560                          * Windows application we wouldn't do this.
 561                          */
 562                         i=0;
 563                         if(!write_tty) {
 564                                 if(read_tty) {
 565                                         tv.tv_sec = 1;
 566                                         tv.tv_usec = 0;
 567                                         i=select(width,(void *)&readfds,(void *)&writefds,
 568                                                  NULL,&tv);
 569                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
 570                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
 571                                          NULL,NULL);
 572                         }
 573 #else
 574                         i=select(width,(void *)&readfds,(void *)&writefds,
 575                                  NULL,NULL);
 576 #endif
 577                         if ( i < 0)
 578                                 {
 579                                 BIO_printf(bio_err,"bad select %d\n",
 580                                 get_last_socket_error());
 581                                 goto shut;
 582                                 /* goto end; */
 583                                 }
 584                         }
 585
 586                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
 587                         {
 588                         k=SSL_write(con,&(cbuf[cbuf_off]),
 589                                 (unsigned int)cbuf_len);
 590                         switch (SSL_get_error(con,k))
 591                                 {
 592                         case SSL_ERROR_NONE:
 593                                 cbuf_off+=k;
 594                                 cbuf_len-=k;
 595                                 if (k <= 0) goto end;
 596                                 /* we have done a  write(con,NULL,0); */
 597                                 if (cbuf_len <= 0)
 598                                         {
 599                                         read_tty=1;
 600                                         write_ssl=0;
 601                                         }
 602                                 else /* if (cbuf_len > 0) */
 603                                         {
 604                                         read_tty=0;
 605                                         write_ssl=1;
 606                                         }
 607                                 break;
 608                         case SSL_ERROR_WANT_WRITE:
 609                                 BIO_printf(bio_c_out,"write W BLOCK\n");
 610                                 write_ssl=1;
 611                                 read_tty=0;
 612                                 break;
 613                         case SSL_ERROR_WANT_READ:
 614                                 BIO_printf(bio_c_out,"write R BLOCK\n");
 615                                 write_tty=0;
 616                                 read_ssl=1;
 617                                 write_ssl=0;
 618                                 break;
 619                         case SSL_ERROR_WANT_X509_LOOKUP:
 620                                 BIO_printf(bio_c_out,"write X BLOCK\n");
 621                                 break;
 622                         case SSL_ERROR_ZERO_RETURN:
 623                                 if (cbuf_len != 0)
 624                                         {
 625                                         BIO_printf(bio_c_out,"shutdown\n");
 626                                         goto shut;
 627                                         }
 628                                 else
 629                                         {
 630                                         read_tty=1;
 631                                         write_ssl=0;
 632                                         break;
 633                                         }
 634
 635                         case SSL_ERROR_SYSCALL:
 636                                 if ((k != 0) || (cbuf_len != 0))
 637                                         {
 638                                         BIO_printf(bio_err,"write:errno=%d\n",
 639                                                 get_last_socket_error());
 640                                         goto shut;
 641                                         }
 642                                 else
 643                                         {
 644                                         read_tty=1;
 645                                         write_ssl=0;
 646                                         }
 647                                 break;
 648                         case SSL_ERROR_SSL:
 649                                 ERR_print_errors(bio_err);
 650                                 goto shut;
 651                                 }
 652                         }
 653 #ifdef OPENSSL_SYS_WINDOWS
 654                 /* Assume Windows can always write */
 655                 else if (!ssl_pending && write_tty)
 656 #else
 657                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
 658 #endif
 659                         {
 660 #ifdef CHARSET_EBCDIC
 661                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 662 #endif
 663                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
 664
 665                         if (i <= 0)
 666                                 {
 667                                 BIO_printf(bio_c_out,"DONE\n");
 668                                 goto shut;
 669                                 /* goto end; */
 670                                 }
 671
 672                         sbuf_len-=i;;
 673                         sbuf_off+=i;
 674                         if (sbuf_len <= 0)
 675                                 {
 676                                 read_ssl=1;
 677                                 write_tty=0;
 678                                 }
 679                         }
 680                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
 681                         {
 682 #ifdef RENEG
 683 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
 684 #endif
 685 #if 1
 686                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
 687 #else
 688 /* Demo for pending and peek :-) */
 689                         k=SSL_read(con,sbuf,16);
 690 { char zbuf[10240];
 691 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
 692 }
 693 #endif
 694
 695                         switch (SSL_get_error(con,k))
 696                                 {
 697                         case SSL_ERROR_NONE:
 698                                 if (k <= 0)
 699                                         goto end;
 700                                 sbuf_off=0;
 701                                 sbuf_len=k;
 702
 703                                 read_ssl=0;
 704                                 write_tty=1;
 705                                 break;
 706                         case SSL_ERROR_WANT_WRITE:
 707                                 BIO_printf(bio_c_out,"read W BLOCK\n");
 708                                 write_ssl=1;
 709                                 read_tty=0;
 710                                 break;
 711                         case SSL_ERROR_WANT_READ:
 712                                 BIO_printf(bio_c_out,"read R BLOCK\n");
 713                                 write_tty=0;
 714                                 read_ssl=1;
 715                                 if ((read_tty == 0) && (write_ssl == 0))
 716                                         write_ssl=1;
 717                                 break;
 718                         case SSL_ERROR_WANT_X509_LOOKUP:
 719                                 BIO_printf(bio_c_out,"read X BLOCK\n");
 720                                 break;
 721                         case SSL_ERROR_SYSCALL:
 722                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
 723                                 goto shut;
 724                         case SSL_ERROR_ZERO_RETURN:
 725                                 BIO_printf(bio_c_out,"closed\n");
 726                                 goto shut;
 727                         case SSL_ERROR_SSL:
 728                                 ERR_print_errors(bio_err);
 729                                 goto shut;
 730                                 /* break; */
 731                                 }
 732                         }
 733
 734 #ifdef OPENSSL_SYS_WINDOWS
 735                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
 736 #else
 737                 else if (FD_ISSET(fileno(stdin),&readfds))
 738 #endif
 739                         {
 740                         if (crlf)
 741                                 {
 742                                 int j, lf_num;
 743
 744                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
 745                                 lf_num = 0;
 746                                 /* both loops are skipped when i <= 0 */
 747                                 for (j = 0; j < i; j++)
 748                                         if (cbuf[j] == '\n')
 749                                                 lf_num++;
 750                                 for (j = i-1; j >= 0; j--)
 751                                         {
 752                                         cbuf[j+lf_num] = cbuf[j];
 753                                         if (cbuf[j] == '\n')
 754                                                 {
 755                                                 lf_num--;
 756                                                 i++;
 757                                                 cbuf[j+lf_num] = '\r';
 758                                                 }
 759                                         }
 760                                 assert(lf_num == 0);
 761                                 }
 762                         else
 763                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
 764
 765                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
 766                                 {
 767                                 BIO_printf(bio_err,"DONE\n");
 768                                 goto shut;
 769                                 }
 770
 771                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
 772                                 {
 773                                 BIO_printf(bio_err,"RENEGOTIATING\n");
 774                                 SSL_renegotiate(con);
 775                                 cbuf_len=0;
 776                                 }
 777                         else
 778                                 {
 779                                 cbuf_len=i;
 780                                 cbuf_off=0;
 781 #ifdef CHARSET_EBCDIC
 782                                 ebcdic2ascii(cbuf, cbuf, i);
 783 #endif
 784                                 }
 785
 786                         write_ssl=1;
 787                         read_tty=0;
 788                         }
 789                 }
 790 shut:
 791         SSL_shutdown(con);
 792         SHUTDOWN(SSL_get_fd(con));
 793         ret=0;
 794 end:
 795         if(prexit) print_stuff(bio_c_out,con,1);
 796         if (con != NULL) SSL_free(con);
 797         if (con2 != NULL) SSL_free(con2);
 798         if (ctx != NULL) SSL_CTX_free(ctx);
 799         if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); OPENSSL_free(cbuf); }
 800         if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); OPENSSL_free(sbuf); }
 801         if (bio_c_out != NULL)
 802                 {
 803                 BIO_free(bio_c_out);
 804                 bio_c_out=NULL;
 805                 }
 806         EXIT(ret);
 807         }
 808
 809
 810 static void print_stuff(BIO *bio, SSL *s, int full)
 811         {
 812         X509 *peer=NULL;
 813         char *p;
 814         static char *space="                ";
 815         char buf[BUFSIZ];
 816         STACK_OF(X509) *sk;
 817         STACK_OF(X509_NAME) *sk2;
 818         SSL_CIPHER *c;
 819         X509_NAME *xn;
 820         int j,i;
 821
 822         if (full)
 823                 {
 824                 int got_a_chain = 0;
 825
 826                 sk=SSL_get_peer_cert_chain(s);
 827                 if (sk != NULL)
 828                         {
 829                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
 830
 831                         BIO_printf(bio,"---\nCertificate chain\n");
 832                         for (i=0; i<sk_X509_num(sk); i++)
 833                                 {
 834                                 X509_NAME_oneline(X509_get_subject_name(
 835                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 836                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
 837                                 X509_NAME_oneline(X509_get_issuer_name(
 838                                         sk_X509_value(sk,i)),buf,BUFSIZ);
 839                                 BIO_printf(bio,"   i:%s\n",buf);
 840                                 if (c_showcerts)
 841                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
 842                                 }
 843                         }
 844
 845                 BIO_printf(bio,"---\n");
 846                 peer=SSL_get_peer_certificate(s);
 847                 if (peer != NULL)
 848                         {
 849                         BIO_printf(bio,"Server certificate\n");
 850                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
 851                                 PEM_write_bio_X509(bio,peer);
 852                         X509_NAME_oneline(X509_get_subject_name(peer),
 853                                 buf,BUFSIZ);
 854                         BIO_printf(bio,"subject=%s\n",buf);
 855                         X509_NAME_oneline(X509_get_issuer_name(peer),
 856                                 buf,BUFSIZ);
 857                         BIO_printf(bio,"issuer=%s\n",buf);
 858                         }
 859                 else
 860                         BIO_printf(bio,"no peer certificate available\n");
 861
 862                 sk2=SSL_get_client_CA_list(s);
 863                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
 864                         {
 865                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
 866                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
 867                                 {
 868                                 xn=sk_X509_NAME_value(sk2,i);
 869                                 X509_NAME_oneline(xn,buf,sizeof(buf));
 870                                 BIO_write(bio,buf,strlen(buf));
 871                                 BIO_write(bio,"\n",1);
 872                                 }
 873                         }
 874                 else
 875                         {
 876                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
 877                         }
 878                 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
 879                 if (p != NULL)
 880                         {
 881                         /* This works only for SSL 2.  In later protocol
 882                          * versions, the client does not know what other
 883                          * ciphers (in addition to the one to be used
 884                          * in the current connection) the server supports. */
 885
 886                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
 887                         j=i=0;
 888                         while (*p)
 889                                 {
 890                                 if (*p == ':')
 891                                         {
 892                                         BIO_write(bio,space,15-j%25);
 893                                         i++;
 894                                         j=0;
 895                                         BIO_write(bio,((i%3)?" ":"\n"),1);
 896                                         }
 897                                 else
 898                                         {
 899                                         BIO_write(bio,p,1);
 900                                         j++;
 901                                         }
 902                                 p++;
 903                                 }
 904                         BIO_write(bio,"\n",1);
 905                         }
 906
 907                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
 908                         BIO_number_read(SSL_get_rbio(s)),
 909                         BIO_number_written(SSL_get_wbio(s)));
 910                 }
 911         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
 912         c=SSL_get_current_cipher(s);
 913         BIO_printf(bio,"%s, Cipher is %s\n",
 914                 SSL_CIPHER_get_version(c),
 915                 SSL_CIPHER_get_name(c));
 916         if (peer != NULL) {
 917                 EVP_PKEY *pktmp;
 918                 pktmp = X509_get_pubkey(peer);
 919                 BIO_printf(bio,"Server public key is %d bit\n",
 920                                                          EVP_PKEY_bits(pktmp));
 921                 EVP_PKEY_free(pktmp);
 922         }
 923         SSL_SESSION_print(bio,SSL_get_session(s));
 924         BIO_printf(bio,"---\n");
 925         if (peer != NULL)
 926                 X509_free(peer);
 927         }
 928